| Index: blimp/helium/object_sync_state.h
 | 
| diff --git a/blimp/helium/object_sync_state.h b/blimp/helium/object_sync_state.h
 | 
| index 8f4e2e6d0b1524bca113636f8d6679d5affc900d..5bd54b381231237e18bddf9af357e9288a9de1df 100644
 | 
| --- a/blimp/helium/object_sync_state.h
 | 
| +++ b/blimp/helium/object_sync_state.h
 | 
| @@ -6,6 +6,7 @@
 | 
|  #define BLIMP_HELIUM_OBJECT_SYNC_STATE_H_
 | 
|  
 | 
|  #include "base/cancelable_callback.h"
 | 
| +#include "base/memory/ptr_util.h"
 | 
|  #include "blimp/helium/blimp_helium_export.h"
 | 
|  #include "blimp/helium/lazy_syncable_adapter.h"
 | 
|  #include "blimp/helium/syncable.h"
 | 
| 
 |